Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thu sach » tu sach, thuat sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
tai cua » thai cua, tai cuc, tri cua
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thu sach)) ky nang xa hoi. hieu ve ((cam tuc) or (nam thuoc)) van hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) ky nang xa hoi. hieu ve ((cam tuc) OR (nam thuoc)) van hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu sach)) ky nang xa hoi. hieu ve ((cam tuc) or (nam thuoc)) van hanh tai cua tre*.